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evergirl 2 years ago Help please! Thank you! (:

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1. evergirl

Rationalize the denominator of sqrt -4/(7 - 3i)+(2 + 5i)

2. satellite73

$\frac{\sqrt{-4}}{(7+3i)+(2+5i)}$??

3. ParthKohli

Rationalize or "realize"?

4. ParthKohli

And first add the denominators, then conjugation...

5. satellite73

start with $\frac{2i}{9+2i}$

6. evergirl

Yes that is the equation

7. ParthKohli

I mean simplify.

8. ParthKohli

Right there, and then find the conjugate

9. evergirl

hold on one moment please

10. evergirl

ok

11. evergirl

Thanks Parth

12. evergirl

And satelitte

13. ParthKohli

Yay. What was your answer?

14. evergirl

I got -16 + 18i/7

15. ParthKohli

Seems incorrect...

16. evergirl

ok one second lemme try again

17. evergirl

4 + 18i over 85

18. ParthKohli

That's right

19. evergirl

Thank you again!

20. ParthKohli

No problem at all. :-)

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